package io;

import java.nio.ByteBuffer;
import java.nio.CharBuffer;

public class UsingBuffers {
private static void symmetricScramble(CharBuffer buffer){
	while(buffer.hasRemaining()){
		buffer.mark();
		char c1=buffer.get();
		char c2=buffer.get();
		buffer.reset();
		buffer.put(c2).put(c1);
	}
}
public static void main(String[] args) {
	char[]data="UsingBuffers".toCharArray();
	ByteBuffer bb=ByteBuffer.allocate(data.length*2);
	CharBuffer cb=bb.asCharBuffer();
	cb.put(data);
	System.out.println(cb.rewind());
	symmetricScramble(cb);
	System.out.println(cb.rewind());
	symmetricScramble(cb);
	System.out.println(cb.rewind());
}
}
